22 



MUSSELS OF CENTRAL AND NORTHEEN MINNESOTA. 



upper end of the lake it is probable that some of the pig- toes {Quad- 

 rula) would thrive well. 



It is very doubtful whether any recommendations can be made for 

 Pleasant Lake. 



PULASKI, BUFFALO, RICE, AND KORONIS LAKES. 



These four lakes are connected with the Crow River, but the out- 

 lets are very small streams, and those of the first two are open only 

 during spring freshets. 



Lake Pulaski is nearly circular in outline, about IJ miles in diam- 

 eter, with a bottom composed of gravel and sand, covered with a 

 heavy growth of Chara, Potomageton, and algae. 



Buffalo Lake is 2^ miles long and 1 mile wide, with a maximum 

 depth of 50 to 60 feet. There are two shallow bars across the center 

 of the lake which are covered with rushes, and the bottom is firm 

 sand and gravel, with very little vegetation. 



Rice Lake, 6 miles northeast of Paynesville in Stearns County, is 3 

 miles long by 2 miles wide. The bottom is composed of much coarser 

 gravel than in Buffalo Lake, and there is a little more CJiara and 

 algae. The north fork of the Crow River runs into the southwest 

 corner of this lake and empties out again within a short distance. 



Koronis Lake, 2 miles southeast of Paynesville, is 3 J miles long 

 and 2 miles wide, with a very irregular and precipitous shore. The 

 bottom contains much more sand than gravel and the vegetation, 

 is very limited except at the inlet and outlet. 



The fat mucket (Luteola) and Anodonta pepiniana were found in all 

 four lakes, and in addition Anodontoides ferussacianus modestus was 

 found in Buffalo and Koronis Lakes. Most of these muckets are 

 dwarfed, as is usual in a lake, and thin-shelled, but those from Rice 

 Lake are full size, of good thickness and have a fair luster, and were 

 classed as first-grade shells. 



The Anodontas were found in regular windrows 10 or 15 feet from 

 shore, and outside of them were the luteolas, in water shallow enough 

 to obtain them by wading. The epidermis of these luteolas was a 

 dark straw-yellow, and was highly polished like that of the same 

 species from Lake Henry (p. 11). 



The comparative paucity of shejls in these lakes is easily explained 

 by the fact that fish can not run into them freely at the time of year 

 when they are infested with glochidia. The conditions in Buffalo 

 Lake are excellent for sand-sheUs and species which frequent shallow 

 bars. The thick-shelled luteolas from Pokegama Lake (Pine County), 

 or Lake Pepin would undoubtedly thrive in Rice and Koronis Lakes. 

 Lake Pulaski is not worth stocking with any kind of shells. 



Each of these lakes contains an abundance of perch, bass, sunfish, 

 crappies, and wall-eyed pike, which could be seined with little trouble 



